China on Saturday issued a yellow alert for smog as the pollution choked most regions in the country's north with no signs of abating. This morning, PM 2.5 density -- particulate matter with size......

Beijing on Friday issued its second-ever red alert for smog as a new bout of air pollution is set to hit the city of over 22 million population from Saturday, days after the Chinese capital issued......

Vehicles travel on a bridge amid heavy smog after Beijing issued its first ever 'red alert' for air pollution on Tuesday. Photograph: Reuters As smog-hit Beijing enforced its first-ever red alert......

Companies need to voluntarily share data. It was India's largest power generator, NTPC, that refused public scrutiny, notes Sunita Narain. Coal is an environmentalist's bugbear. The use of coal to......

Beijing has vowed the Olympic Games will take place under blue skies, not the murky "sauna" haze that has shrouded the city recently, but even on apparently clear days pollution levels may not be......